Another Pre Season Injury - This time for first rounder Derrick Harmon
Last week it was announced that first rounder draft pick Derrick Harmon AVOIDED serious injury but will miss 1 month with an MCL Sprain. Whats that mean for the Steelers? What is the MCL? The MCL is the ligament that sits on the inside of the knee and connects the femur (thigh bone) and tibia (shin). The MCL is a passive structure that supports the knee from whats known as valgus forces (think, a person hitting you on the outside of the knee). It is an often injured area and with the proper rehab can be a minor setback compared to other knee injuries. So what does that rehab look like? 🔑 Key Areas of Focus in Rehab - Quadriceps & Hamstrings – These two act as dynamic stabilizers for the knee. Studies show that restoring quadriceps strength is essential for knee stability after MCL injury (Wijdicks et al., 2010). The hamstrings also help resist tibial rotation that stresses the ligament. - Hip & Glute Strength – Weak glutes shift load down to the knee. Research highlights that deficits in hip abduction strength correlate with valgus collapse mechanics, which put strain on the MCL (Hewett et al., 2005). - Adductors – The adductors provide medial support, reducing valgus load on the MCL (Belchior et al., 2020). Targeting them reduces risk of re-injury. ⚠️ Common Compensations to Watch For - Contralateral overload – Over-relying on the opposite leg during gait, squats, or cutting. - Quad avoidance – Protecting the injured knee by using hip-dominant movement patterns instead of bending the knee. - Poor frontal plane control – Knee diving inward or hip drop with single-leg tasks, which increases reinjury risk. 🏈 Return-to-Play Progression 1. Acute Phase (0–2 weeks): Swelling control, restore range of motion, and early quad activation. Early motion is shown to prevent stiffness without compromising healing (Indelicato et al., 1990). 2. Strength Phase (2–4 weeks): Focus on symmetrical strength in quads, hamstrings, and glutes. Controlled single-leg work is reintroduced. 3. Movement Phase (weeks 3–5): Begin linear running, change of direction, and plyometrics as tolerated. Evidence suggests sport-specific drills improve neuromuscular readiness and reduce re-injury (Grindem et al., 2016). 4. Game Readiness: Before clearance, athletes must tolerate high-speed, contact, and chaotic play conditions. Functional testing (single-leg hop, Y-balance, strength symmetry) guides this decision-making.