Blank Medical Fields and 168 Injury Cases: Notes on the Legs of Vietnamese Women's Volleyball

In late August 2026, in a Bangkok hotel, I held a medical report belonging to a women's volleyball team competing at the FIVB Women's World Championship. The sheet had a heading, a team doctor's signature and an official stamp. The diagnosis field read four words: muscle soreness, monitoring. The expected recovery time was blank. The recommended maximum minutes per match was blank. The seven-day cumulative load was blank. Three of the four most important fields in an injury record had been left empty, while the tournament's technical bulletin still listed the athlete as fit to play. Two documents, one pair of legs, two different answers.

I have worked as a team-doctor liaison since 2026, when I handled medical affairs for a football club in Hai Phong. Since 2026 I have moved fully into volleyball. My job sits in between: between the treatment room and the press room. An injury is a fact. An injury announcement is a document that needs verification. Today I open the notebook again.

2026 was a hinge year for Vietnamese women's volleyball. The national team played the FIVB Women's World Championship for the first time, a 32-team event held in Thailand from 22 August to 7 September 2026. The format split the field into eight pools of four, three matches per team, and those three matches were crammed into the first six days. Before that came the national championship and regional cups. After it came SEA Games 33 in Thailand in December 2026. A calendar year with no genuinely quiet month.

For a player who competes domestically, wears the national shirt and also plays abroad — as captain Tran Thi Thanh Thuy has done with PFU Blue Cats in Japan and then Kuzeyboru in Turkey — the total number of official matches in a single year can pass 60. Other pillars such as Nguyen Thi Bich Tuyen and Doan Thi Lam Oanh also sit in the group that grinds from the domestic league straight into national-team duty. A women's volleyball match runs 80 to 150 minutes. A rally lasts 12 to 20 seconds on average. A set contains 40 to 60 rallies. What deserves counting is not the number of matches but the number of landings.

I began logging legs in the 2026 season. By the end of 2026 my notebook held 168 injury and minor-injury cases recorded at four domestic arenas and two international events. The split: 41 percent ankle and foot, 22 percent patellar tendon and knee, 14 percent shoulder, 9 percent lower back, 8 percent fingers, 6 percent other. Each case carries notes on the set, the score at the moment of injury and the body position at contact.

Sorting by position is more revealing than sorting by injury type. Outside hitters and middle blockers account for 63 percent of cases while making up roughly 40 percent of the bodies on court. Liberos account for 12 percent, but almost all of those are shoulder and hip problems caused by repeated dive-and-recover motions. Setters account for only 10 percent, yet 70 percent of their cases land on the ankle and fingers. Numbers do not lie, but the people who supply numbers do — and here the supplier is me, so I write the collection method at the bottom of every page.

The clearest finding: most ankle injuries do not come from the decisive rally. Seventy-one percent of ankle cases in my notebook occurred in the landing phase, not in net contact. Sixty-three percent happened from the third set onward. And 58 percent happened when the score gap was four points or more. This is the part people rarely say out loud: a leg does not break at its most stretched moment; it breaks at the moment the head has already allowed itself to relax.

I call it silent load. A 3-0 win lasting 75 minutes can involve fewer jumps for an outside hitter than a 2-3 loss lasting 140 minutes. In return, in the fast win, more rallies end early, which means more landings in a state of lost balance after hitting the ball at full reach. No index captures that if the only thing being recorded is points scored.

Another technical link is perfect-pass rate. When a team's perfect-pass rate drops from 55 percent to below 40 percent, the setter is forced to push the ball to the wings, and out-of-system attacks multiply. In my notebook, in matches with a perfect-pass rate under 40 percent, out-of-system attacks rose 2.3 times compared with matches at 55 percent or above. In exactly those matches, recorded soft-tissue complaints in the shoulder and lower back also rose.

Put differently, a weak reception line does not merely cost points. It shifts load onto the shoulders and backs of players forced to attack from bad positions. This is the kind of causal chain a match statistics sheet never displays, because a statistics sheet counts outcomes, not body positions at the moment of contact.

One more silent variable runs through six years of my notes: flooring and arena temperature. With the same squad and the same training volume, ankle cases recorded in older arenas with synthetic flooring whose elasticity has hardened ran about 1.4 times higher than in new arenas. Training sessions held after 17:00, when the floor has stored heat all day, produced the highest concentration of ankle sprains in the 2026 season. Nobody publishes that index, because it belongs to nobody.

Another group deserves mention: the under-20 players promoted to the senior side. In my notebook, athletes under 21 account for 19 percent of cases while taking only about 8 percent of playing time. The reason is not fitness but landing technique. They land on half a foot with the knee nearly straight — a movement pattern a coach can correct in four weeks, but one that usually goes uncorrected because the calendar never offers four empty weeks.

The dataset I built during the pandemic season is still recording what they prefer not to publish. I keep a separate column called blank space: the number of days a team published no medical information about a player while that player did not take the court. The 2026 average was 9.4 days. The maximum was 26 days. For a grade-2 ankle injury, 26 blank days is reasonable. For a case described as muscle soreness, monitoring, 26 days is a different story entirely.

In Vietnam we carry a very beautiful idea about fast returns. A player with a taped ankle comes on in the fourth set and scores the decisive point — that is the image most widely shared. Very few people share the image eighteen months later, when the patellar tendon has thickened and the running step has lost its spring. I do not blame the audience. I blame the people holding the data who chose not to write it into the record.

The team doctor says three weeks; I count down each day — the difference lies in the number, not the promise. A grade-2 patellar tendon injury in an athlete who jumps nearly 200 times per match requires time for tendon remodelling, not merely time for pain to fade. The pain-free day always arrives before the day the tendon is strong enough, usually seven to ten days earlier. Those seven to ten days are where recurrences are born.

And here is the hardest part. The expected recovery time field is left blank not out of laziness. It is left blank because once written, that number becomes a commitment that can be checked. If the sheet says a maximum of 40 minutes and the player plays 70, there is evidence. If the sheet is blank, everything can be called a technical decision based on the situation. Before trusting a diagnosis, look at who benefits from it.

One more competition-rule detail deserves scrutiny: the substitution pattern that pulls a middle blocker and setter out to bring in a backup setter and opposite, preserving three attacking options in the front row. It keeps the firepower alive, but it also means some players never get rest at the right rhythm. In my notebook, players regularly inside such substitution pairs recorded actual playing minutes 23 percent higher than their nominal registered minutes. That is load that appears in no press release.

The 2026 World Cup taught me that silence is also a form of data. When FIFA published the official report of a quarter-final with no line about a centre-back showing signs of hamstring pain, the telling part was not the report — it was the gap inside the report. Vietnamese volleyball is at exactly that stage: we now have enough international competition to start generating data, but not yet the habit of publishing to a standard.

From the 2026 season, the task is not large. A four-field form: diagnosis, expected recovery time, maximum minutes per match, seven-day load. Those four fields are enough for a player, a coach and a doctor to look at the same number. If three people look at three different numbers, the legs pay. And if only one person is allowed to fill in the sheet, that sheet serves only one person.

I am not asking for full medical records to be published. I am asking for load data to be published — jump counts, actual playing minutes, rest days between matches. That is the data of a body, and the body belongs to the person who spent it. Clubs have the right to keep tactics secret. They do not have the right to keep secret how far past the limit a knee was pushed.

At 60, I still open the notebook before every match — an old habit, but the data is always new. What I want to leave behind is not a list of injuries. When a player returns earlier than expected and the whole arena applauds, I still want to ask one very old question: is she proving that her body has recovered, or proving that nobody had the courage to write the real number on the sheet?